[Sumai Surfin] Tokyo Metropolitan Area 'Oki-shiki Profit Probability Top Condominium Ranking' for May 2026 Announced, Revealing Condominiums Likely to Retain Asset Value
Style Act Co., Ltd. announced the May 2026 edition of the 'Oki-shiki Profit Probability' ranking for condominiums in the Tokyo metropolitan area on its 'Sumai Surfin' platform. This ranking identifies condominiums likely to retain asset value, responding to increasing consumer demand for asset-conscious purchases amid soaring condominium prices.
📋 Article Processing Timeline
- 📰 Published: May 1, 2026 at 19:00
- 🔍 Collected: May 1, 2026 at 10:31
- 🤖 AI Analyzed: May 1, 2026 at 11:31 (1h 0m after Collected)
Style Act Co., Ltd. (Chuo-ku, Tokyo; Representative Director: Yu Arioki), which develops business using real estate big data, has announced the May 2026 edition of the area-specific top condominium ranking based on the 'Oki-shiki Profit Probability' index, which indicates the likelihood of condominiums in the Tokyo metropolitan area retaining their asset value. This ranking is published on its self-operated platform 'Sumai Surfin' (https://www.sumai-surfin.com/).
In response to the recent surge in condominium prices, the proportion of consumers who prioritize asset value when considering a purchase is increasing. In light of these social trends and consumer needs, 'Sumai Surfin' aims to support condominium selection with an emphasis on asset value by ranking condominiums in the Tokyo metropolitan area in order of their 'Oki-shiki Profit Probability' and announcing it monthly. The target properties are condominiums currently on sale or planned for sale in the Tokyo metropolitan area, and this release only announces the top-ranked properties for 'Standard (*)' and 'Katsukatsu (*)' categories in each of the 9 areas.
The May announcement covers properties for which sales or sales plans were confirmed as of April 9, 2026.
The applicable properties are as follows. For properties ranked below the first place in each area, details will be disclosed on 'Sumai Surfin'.
* 'Standard' target properties refer to condominiums with a large number of 3LDK or 4LDK layouts, while 'Katsukatsu' target properties refer to condominiums with a large number of 1LDK or 2LDK layouts.
'Sumai Surfin Page' URL
https://www.sumai-surfin.com/product/okishiki/index.php
■ About 'Oki-shiki Profit Probability'
It is calculated by determining the percentage of past properties that generated unrealized gains for each category and averaging the category-specific values for the property in question.
Categories are divided by walking distance, such as within 5 minutes or within 10 minutes.
Target categories include location (administrative district, station, walking distance), property attributes (total number of units, number of floors, area range, price range), and more.
This result verification has been proven as follows: the higher the probability of profit, the more the price has appreciated as a used property.
(Graph) Used property price fluctuation rate by profit probability
≪Sumai Surfin Site Overview≫
'Enriching life with analytical information' - a free membership second opinion site for condominiums.
It 'visualizes' information that people want to know when buying and selling condominiums, providing real estate information that was difficult for prospective buyers and sellers to obtain.
It offers rich content such as condominium appraisal prices, market price information, member property evaluations, developer evaluations, and experiences of condominium buyers.
It lists 2.07 million condominium appraisals, 130,000 new condominium price lists, and price predictions for all new properties in the last two years. The number of members is approximately 330,000 (as of April 2026).
URL: https://www.sumai-surfin.com/
Operated by Style Act Co., Ltd., an industry-leading real estate big data company that researches and analyzes over 100 million real estate data points annually.
■ Purpose of Sumai Surfin: https://www.sumai-surfin.com/guide/aboutus/
■ How to use Sumai Surfin: https://www.sumai-surfin.com/k/static/sumaiSurfinTrotter/
■ Appraisal method for new condominium prices: https://www.sumai-surfin.com/guide/shinchiku_jika.php
In response to the recent surge in condominium prices, the proportion of consumers who prioritize asset value when considering a purchase is increasing. In light of these social trends and consumer needs, 'Sumai Surfin' aims to support condominium selection with an emphasis on asset value by ranking condominiums in the Tokyo metropolitan area in order of their 'Oki-shiki Profit Probability' and announcing it monthly. The target properties are condominiums currently on sale or planned for sale in the Tokyo metropolitan area, and this release only announces the top-ranked properties for 'Standard (*)' and 'Katsukatsu (*)' categories in each of the 9 areas.
The May announcement covers properties for which sales or sales plans were confirmed as of April 9, 2026.
The applicable properties are as follows. For properties ranked below the first place in each area, details will be disclosed on 'Sumai Surfin'.
* 'Standard' target properties refer to condominiums with a large number of 3LDK or 4LDK layouts, while 'Katsukatsu' target properties refer to condominiums with a large number of 1LDK or 2LDK layouts.
'Sumai Surfin Page' URL
https://www.sumai-surfin.com/product/okishiki/index.php
■ About 'Oki-shiki Profit Probability'
It is calculated by determining the percentage of past properties that generated unrealized gains for each category and averaging the category-specific values for the property in question.
Categories are divided by walking distance, such as within 5 minutes or within 10 minutes.
Target categories include location (administrative district, station, walking distance), property attributes (total number of units, number of floors, area range, price range), and more.
This result verification has been proven as follows: the higher the probability of profit, the more the price has appreciated as a used property.
(Graph) Used property price fluctuation rate by profit probability
≪Sumai Surfin Site Overview≫
'Enriching life with analytical information' - a free membership second opinion site for condominiums.
It 'visualizes' information that people want to know when buying and selling condominiums, providing real estate information that was difficult for prospective buyers and sellers to obtain.
It offers rich content such as condominium appraisal prices, market price information, member property evaluations, developer evaluations, and experiences of condominium buyers.
It lists 2.07 million condominium appraisals, 130,000 new condominium price lists, and price predictions for all new properties in the last two years. The number of members is approximately 330,000 (as of April 2026).
URL: https://www.sumai-surfin.com/
Operated by Style Act Co., Ltd., an industry-leading real estate big data company that researches and analyzes over 100 million real estate data points annually.
■ Purpose of Sumai Surfin: https://www.sumai-surfin.com/guide/aboutus/
■ How to use Sumai Surfin: https://www.sumai-surfin.com/k/static/sumaiSurfinTrotter/
■ Appraisal method for new condominium prices: https://www.sumai-surfin.com/guide/shinchiku_jika.php